CN2036226U - Brake play automatic adjuster - Google Patents
Brake play automatic adjuster Download PDFInfo
- Publication number
- CN2036226U CN2036226U CN 88200803 CN88200803U CN2036226U CN 2036226 U CN2036226 U CN 2036226U CN 88200803 CN88200803 CN 88200803 CN 88200803 U CN88200803 U CN 88200803U CN 2036226 U CN2036226 U CN 2036226U
- Authority
- CN
- China
- Prior art keywords
- brake
- ratchet
- shoe
- gap automatic
- automatic control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- Braking Arrangements (AREA)
Abstract
The utility model provides an unbalanced shoe-drum type brake gap automatic adjuster comprising a brake shoe (2), a brake disc (1), a supporting axle (8), an eccentric axle sleeve (3), and an eccentric axle (4). The unbalanced shoe-drum type brake gap automatic adjuster is characterized in that the eccentric axle (4) is provided with a ratchet (5); a support frame (9) fixed on the brake disc (1) is provided with a compressed spring (10); a spring seat (11) is respectively hinged with the root of a ratchet pawl (12) and an inner and an outer positioning plates (7, 6); the inner and the outer positioning plates are respectively positioned on both sides of the brake shoe (2) and hinged with the supporting axle (8); a tail (13) of a supporting end of the brake shoe is connected with a gap adjustment bolt (15) and an adjustment screw nut (14) through screw threads. The brake gaps of each shoe can be independently and automatically adjusted through the unbalanced shoe-drum type brake gap automatic adjuster.
Description
The utility model relates to a kind of non-equilibrium shoe drum braking gap automatic control regulator.
Existing shoe drum braking gap automatic control regulator, mainly total length or the gap that utilizes tensile push rod to regulate between two hoof and the brake drum are finished with the connecting rod of regulating brake cam start angle, brake hydraulic wheel cylinder, the regulator of this structure can only be regulated the initial opening angle of brake shoe, and equivalent is regulated the brake clearance of two hoof, and non-equilibrium shoe drum brake device leading shoe and trailing shoe unit pressure do not wait, the friction facing wearing and tearing are inhomogeneous, the adjustment amount of braking gap does not wait, and equivalent is regulated brake clearance and can be caused the retardation efficiency of two hoof to differ greatly; In addition, after brake shoe, the drum abrasion, the secondary cooperation of braking becomes big garden face from little garden face, the simple initial opening angle of brake shoe of regulating can make the symmetrical variation of brake shoe to disc centres, and braking subtask angle increases, brake secondary lifting surface area and reduce, the braking effect variation.
The purpose of this utility model is to provide a kind of energy independent regulation two hoof brake clearances, does not increase the braking gap automatic control regulator of braking the subtask angle.
The braking gap automatic control regulator comprises brake shoe (2), brake disc (1), supporting axle (8), excentric sleeve (3) and eccentric shaft (4), it is characterized in that being equipped with on the eccentric shaft (4) ratchet (5), the support (9) that is fixed on the brake disc (1) is equipped with stage clip (10), spring seat (11) respectively with the root of ratchet (12) and inside and outside positioning plate (7,6) hinge joint, inside and outside positioning plate is positioned at the both sides of brake shoe (2), and support shaft (8) hinge joint; Gapped adjustment bolt (15) and adjustment nut (14) are threaded on the empennage of brake shoe supported end (13).
The edge of ratchet (5) adopts involute.In order to prevent that ratchet and pawl breaks away from, can increase an auxiliary ratchet (16) that links, cooperates with brake disc (1) at least again with ratchet.The horizontal and longitudinal direction size ratio of brake cam can be chosen in 1.05～1.25.
Below in conjunction with accompanying drawing the utility model is elaborated:
Fig. 1 is a braking gap automatic control regulator structural drawing.
Fig. 2 is a braking gap automatic control regulator a-a sectional view.
The both sides of brake disc (1) are fixed with supporting base (17) and stiffening plate (12).Be with eccentric shaft (4) in the excentric sleeve (3), be fixed with ratchet (5) on the eccentric shaft (4), because in braking gap is adjusted automatically, brake shoe is to the displacement of brake pot, the adjustment bolt (15) and the gap between the spring seat (11) that have originally mixed up are increased, cause the standard of adjusting braking gap to change, in order to remedy this variation, the edge of ratchet (5) adopts involute, and the ratchet tooth that makes ratchet is apart from increasing gradually.Supporting axle (8) links eccentric shaft (4), brake shoe support end, inside and outside positioning plate (7,6) on brake disc (1), supporting axle (8) passes the two through hole on the backing plate (19), backing plate is pressed in the top of all hinge elements, the supporting axle head is installed with pin (20), deviates to prevent it.One end of stage clip (10) is fixed on the support (9), and the other end of stage clip (10) and spring seat (11) offset.Inside and outside positioning plate (7,6) is by same bearing pin and spring seat (11) hinge joint, and the root of ratchet (12) and spring seat (11) link, and ratchet (12) and auxiliary ratchet (16) are equipped with extension spring or stage clip, and it is closely contacted with hook tooth.Gapped adjustment bolt (15) and adjustment nut (14) are threaded on the empennage of brake shoe supported end (13), have one to adjust the spheric end opposed hemispherical shape pit of bolt on the spring seat (11) with the gap, the diameter of pit is much larger than adjusting the bolt end diameter, gapped between the termination of adjustment bolt (15) and the pit of spring seat (11), adjust the displacement of bolt when under normal circumstances, this gap is brake just; Behind the drag friction pad wear, the brake shoe subtended angle increases, and the displacement of empennage (13) increases, and adjusts bolt (15) spring seat (11) is depressed, and ratchet (12) and auxiliary ratchet (16) contact with other ratchet on the ratchet (5); After brake discharges, adjust bolt (15) and disengage with spring seat (11), spring seat is under the elastic force effect of stage clip (10), promoting ratchet by ratchet rotates, drive eccentric shaft (4) motion, brake shoe moved to brake drum, with and reach the purpose of automatic adjustment braking gap.Because the adjusting of two hoof is separate, can make the braking gap of leading shoe and trailing shoe approaching as far as possible, has improved braking efficiency.
Claims (5)
1, a kind of non-equilibrium shoe drum braking gap automatic control regulator, comprise brake shoe (2), brake disc (1), supporting axle (8), excentric sleeve (3) and eccentric shaft (4), it is characterized in that being equipped with on the eccentric shaft (4) ratchet (5), the support (9) that is fixed on the brake disc (1) is equipped with stage clip (10), spring seat (11) respectively with the root of ratchet (12) and inside and outside positioning plate (7,6) hinge joint, inside and outside positioning plate is positioned at the both sides of brake shoe (2), and support shaft (8) hinge joint; Gapped adjustment bolt (15) and adjustment nut (14) are threaded on the empennage of brake shoe supported end (13).
2, braking gap automatic control regulator according to claim 1, the edge that it is characterized in that ratchet (5) is an involute.
3, braking gap automatic control regulator according to claim 1 and 2, the horizontal and longitudinal direction size that it is characterized in that brake cam is than for being 1.05～1.25.
4, braking gap automatic control regulator according to claim 1 and 2 is characterized in that having at least one and links the auxiliary ratchet (16) that cooperates with ratchet (5) in brake disc.
5, braking gap automatic control regulator according to claim 3 is characterized in that having at least one and links the auxiliary ratchet (16) that cooperates with ratchet (5) in brake disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200803 CN2036226U (en) | 1988-01-19 | 1988-01-19 | Brake play automatic adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200803 CN2036226U (en) | 1988-01-19 | 1988-01-19 | Brake play automatic adjuster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2036226U true CN2036226U (en) | 1989-04-19 |
Family
ID=4836147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88200803 Withdrawn CN2036226U (en) | 1988-01-19 | 1988-01-19 | Brake play automatic adjuster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2036226U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240826B (en) * | 2007-02-06 | 2010-06-30 | 崔忠民 | Three-force point side-positioned drum type clearance independent spacing self-regulating instantaneous centre brake |
| CN102853000A (en) * | 2012-09-15 | 2013-01-02 | 浙江大学台州研究院 | Automobile brake controlled by wire |
| CN105333039A (en) * | 2015-12-14 | 2016-02-17 | 河南恒远恒山工业有限公司 | Interval adjusting device for cylinder brake of crane lifting mechanism |
-
1988
- 1988-01-19 CN CN 88200803 patent/CN2036226U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240826B (en) * | 2007-02-06 | 2010-06-30 | 崔忠民 | Three-force point side-positioned drum type clearance independent spacing self-regulating instantaneous centre brake |
| CN102853000A (en) * | 2012-09-15 | 2013-01-02 | 浙江大学台州研究院 | Automobile brake controlled by wire |
| CN102853000B (en) * | 2012-09-15 | 2014-07-09 | 浙江大学台州研究院 | Automobile brake controlled by wire |
| CN105333039A (en) * | 2015-12-14 | 2016-02-17 | 河南恒远恒山工业有限公司 | Interval adjusting device for cylinder brake of crane lifting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |